Msg#: 4005711 posted 6:08 pm on Oct 12, 2009 (gmt 0)
I am using the php mail function and emails are being blocked to hotmail accounts. I have tried various methods/headers so I'm now convinced the problem is something to do with Reverse DNS or PTR record. This is based on other posts on this subject.
I know nothing about either of these things. Can anyone suggest how I could check these out, and what to look out for which might be causing a problem?